نتایج جستجو برای: radiology images automatic stitching

تعداد نتایج: 460375  

2017
Ming Li Ruizhi Chen Weilong Zhang Deren Li Xuan Liao Lei Wang Yuanjin Pan Peng Zhang

Dislocation is one of the major challenges in unmanned aerial vehicle (UAV) image stitching. In this paper, we propose a new algorithm for seamlessly stitching UAV images based on a dynamic programming approach. Our solution consists of two steps: Firstly, an image matching algorithm is used to correct the images so that they are in the same coordinate system. Secondly, a new dynamic programmin...

Journal: :iranian journal of radiology 0
fateme panahi lorestan university of medical sciences, lorestan, iran; lorestan university of medical sciences, lorestan, iran kourosh gorji babol university, mazandaran, iran

conclusions in this study radiology students believed digital radiology can enhance the production efficiency and quality of the images. they also had the right information about digital radiology. however, it is recommended in order to prevent the emergence of problems caused by change of radiology equipment and efficiency of the professional in-service training the theoretical training needs ...

2003
SooHyun Cho YunKoo Chung Jaeyeon Lee

Image mosaicing has been collecting considerable attention in the field of computer vision and photogrammetry. Unlike previous methods using a tripod, we have developed which can handle images taken with a hand-held camera to accurately construct a panoramic image. This paper proposes the automatic image mosaic system implementation, which it sees to use feature detection of the image, which is...

2004
J. S. Jimmy Li Sharmil Randhawa

By stitching together adjacent images from a video sequence surveying a scene, a video mosaic of the entire panorama can be formed. Since a video survey consists of a sequence of images having small relative displacements with respect to each other, there is redundant overlapping information in consecutive images so that not all consecutive video images are required to create a mosaic, and only...

Journal: :CoRR 2016
Jonathan Byrne Debra F. Laefer

Unmanned aerial vehicles now make it possible to obtain high quality aerial imagery at a low cost, but processing those images into a single, useful entity is neither simple nor seamless. Specifically, there are factors that must be addressed when merging multiple images into a single coherent one. While ortho-rectification can be done, it tends to be expensive and time consuming. Image stitchi...

2011
Ioana S. Sevcenco Peter J. Hampton Pan Agathoklis

A method for seamless stitching of images with photometric inconsistencies in the overlapping region is presented. The method is based on generating a set of stitched gradients from the gradients of the input images and then reconstructing the mosaic image using the Haar wavelet integration technique of [11], [12]. This O(N) reconstruction technique is based on obtaining the Haar wavelet decomp...

2005
FRITHJOF LUTSCHER JENNY MCNULTY KAREN SEYFFARTH

When a large visual is scanned into a computer in pieces, or printed out across multiple sheets of paper, distortions are often introduced in the scanning or printing process that make it impossible to fully reconstruct the original visual ideally. For clarity, we refer to the pieces of the visual as images, and the whole visual as the picture. Typically, either scanning or printing is done wit...

Journal: :Remote Sensing 2014
Xinming Tang Fen Hu Mi Wang Jun Pan Shuying Jin Gang Lu

High-quality inner FoV (Field of View) stitching is currently a prerequisite step for photogrammetric processing and application of image data acquired by spaceborne TDI CCD cameras. After reviewing the technical development in the issue, we present an inner FoV stitching method based on sensor geometry and projection plane in object space, in which the geometric sensor model of spaceborne TDI ...

Journal: :CoRR 2017
Tianzhu Xiang Gui-Song Xia Xiang Bai Liangpei Zhang

Low-textured image stitching remains a challenging problem. It is difficult to achieve good alignment and it is easy to break image structures due to insufficient and unreliable point correspondences. Moreover, because of the viewpoint variations between multiple images, the stitched images suffer from projective distortions. To solve these problems, this paper presents a line-guided local warp...

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